Improvement in wagon-jacks



"v will UNITED STATES v PATENT OFFICE.

WILLIAM M. DOTY, OF JANESVILLE, WISCONSIN.

IMPROVEMENT IN WACON-JACKS.

.To all whom it may concern:

Be it known that I, WILLIAM M. DoTY, of Janesville, in the county of Rock and State of Wisconsin, have invented a new and useful Improvement in Wagon Jacks; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming a part of this specification.

The wagon-jack embraced in the present invention consists of a standard and an upright bar moving and sliding on one ot' its sides, to which it is held by one or more clasps, which act also as clamps to hold it at any height to which it may be raised by means of a leverarm hung and turning upon a Fulcrum at its upper end, when applied to the aXle of a Wagon to lift it sufficiently to raise the wheel hung thereon from the ground, as will be apparent from the following detail description thereof, reference being had tothe accompanying plate of drawing, the ligure of which represents a perspective view of the wagon-jack.

A in the drawing represents a standard, xed at its lower end to a suitable bed-piece, B 5` C, a vertical bar applied to one side, D, of standard A, on which it moves or slides in a vertical direction by a groove, a, and teuon, b E, a clasp extending loosely around the bar O, and fastened at each end to the sides of the upright standard A by a pin, c, in each end, on'which it turns; F, a lever-arm hung upon a fulcrum, d, in the slot Gr of the upper end of the bar, by which lever, when the jack is placed underthe axle-tree of a wagon for the purpose of lifting its wheel from the ground the axle-tree is raised, the bar O moving upward at the same time, when, removing the hand from the lever, the downward pressure or weight then coming upon the said bar O, necessarily causes its clasp E to tightly bind and clamp it to the standard,as is plain to be seen by an inspection of the drawing, thereby preventing the bar from slipping downward and firmly holding it at such height.

In lieu of only one clasp, E, more may be used; but one I deem sufficient, although I do not intend to limit myself to any particular number of them to be used.

Il claim as new and desire to secure by Letters Patent-` 'Ihe arrangement of the clamp E and standl ard A, operating in combination with the sliding bar O and lever-arm F, without serrations on the sliding bar C, substantially in the manner and for the purpose represented and described.

The above specification of my invention signed by me this 7th dayiof February, 1866.

WILLIAM M. DOTY.

Witnesses:

JOSEPH BAKER, V. L. MERRILL. 

